^yep, London's also doing something major - currently in plans to build the 'Mega Mosque' for 40,000, and capacity up to 70,000 with surrounding buildings during religious festivals. Its right next to the Olympic site, and the new CBD at Stratford. Its controversial of course, not just the fact it will supplant all the major cathedrals as the religious centre of the city, but mostly due to the increased volume of traffic/ people etc in the area (many of the areas residents, many of whom are Muslim, are against it due to this). Of course a mega-cathedral is also in the plans for the mostly Anglican African community, so this too may be supplanted in turn.